Got a membership at 24/7 fitness yesterday since I've been going there off a friends account lol. Anyways never doing pre workout on leg days. Did more then my back could handle. I'm in so much pain right now. I guess 6 45s and 2 35s on incline leg press is to much for my back. That and body squats with 4 45s. My back was in pain the rest of the workout